A salt cavern is a large underground space formed by the dissolution of salt deposits, typically found in areas with significant salt formations. These caverns are created through a process called solution mining, where water is injected into the salt to dissolve it, leaving behind a hollow space. Salt caverns are often used for various industrial purposes, including the storage of natural gas and other hydrocarbons. Due to their unique properties, salt caverns provide a stable environment for storage, as the salt walls help maintain pressure and prevent leaks. They are also used in the production of brine, which is a concentrated solution of salt in water, and can serve as a site for geological storage of carbon dioxide to help mitigate climate change.